Liquid-measuring apparatus.



J. W. GAMBLE.

LIQUID MEASURING APPARATUS.

APPLICATION FILED rnnzo, 1913.

1,080,547. Patented Dec. 9, 1913.

WITNESSES BY I 2 I A TTORNE Y UNKTED STATLES l PlAlENT OFFICE.

JOSEPH W. GAMBLE, 0F PHILADELPHIA, PENNSYLVANIA. ASSIGNOR T0 JOSEPH S.*LOVERING WHARTON WILLIAM S. HALLOWELL, AND JOHN C. JONES, ALL OFPHILADELPHIA, PENNSYLVANIA, DOING BUSINESS AS FIRM OF HARRISON SAFETYBOILER WORKS, OF PHILADELPHIA, PENNSYLVANIA.

LIQUIDJVIEASURING APPAR ATUS.

Specification of Letters Patent.

Patented Dec. 9, l 912;.

Application filed February 20, 1913. Serial No. 749,663.

To all whom it may concern:

Be it known that I, Josurn Y. Ga man, a citizen of the United States ofAmerica, residing in the city and county of lhiladeb phia, in the Stateof llennsylvania, have invented certain new and. useful improve ments inLiquid-Meas1iring Apparatus, of which the following is a true and exactdescription, reference being had to the accompanying drawings, whichform a part thereof.

My present invention relates to ap iaratus embodying means for measuringthe amount of liquid flowing through a weir chamber by measuring thevarying accumulation of water in the inlet eon'lpartment of the weirchamber.

lVith such appa 'atus it is sometimes desirable to utilize a portion ofthe liquid passing to the inlet compartment of the weir chamber or intoa chamber or conduit in open communication therewith without passing itover the weir. For instance, it has been found desirable to employ aweir chamber in conjunction with a feed water heater for measuring thewater passing from the heater to a boiler teed pump, while at the sametime utilizing a portion of the water heated for other purposes andwithout passing it over the weir, so that the water measured will besolely that passing to the boiler feed pump.

The objectof my present invention is to provide simple and e'ttectivemeans for regulating the admission of water to the inlet compartment ofthe weir chamber in such manner as to adequately supply both themeasured and unmeasured water required and at the same time to preventan accumulation of water on the outlet side of the weir which wouldinterfere with the free flow over the latter and introduce imu-curaciesin the measurements obtained. This I accomplish by providing the twowater supply connections, which are in parallel with one another so tospeak, and controlling the flow of water through one oi. theseconnections in response to the height of water level on the outlet sideof the weir, and controlling the How of water through the othercon'nmmication in response to predetermined variations in height ofwater level on the inlet side of the weir, the last mentioned means weiris below the lowermost level of flow over the weir.

'lhe 'arious features of novelty which charamterize my invention arepointed out with particularity in the claims annexed to and forming a.part of this specification. For a better umlerstandiug oi. theinvention, however, and ot the advantages possessed by it, referenceshould be had to the aceompany-, ing drawing and descriptive matter, inwhich i have illustrated and described one form of apparatus emboi lyingmy invention.

The one figure of the drawing a somewhat diagrammatic rtairesentation,with parts in sectional elevation, of a combined water heating andmetm'ing apparatus, constructed in accordance with my present invention.

In the drawing A represents a feed water heater provided with the usualsteam inlet A, and water inlet A" at its upper end, and provided at itslower end with an outlet port A" leading to the inlet compartment of aweir chamber l). The heater is also provided with an outlet connection Afor water to be utilized without passing through the weir chamber.lVithin the weir ehambcn and separating the inlet and outletcompartments of the latter is a weir C which may be notched at. itsupper edge, as indicated at C,-

in the usual manner and over which the water flows from the inlet to theoutlet compartment of the weir chamber.

1) represents a water discharge pipe leading from the outlet compartmentot the weir chamber to a boiler teed pump or other place or device forutilizing the heated and meas ured water passing over the weir.

E represents a float rising and falling with the water level on thesupply side of the weir, and serving to actuate indicating or recordingmeclianisn'i located within the casing 1*.

L re n'esents a vapor equalizing connection between the upper end of theheater and the vapor space in the weir chamber.

'ilo prevent the water level in the outlet compartment of the weir frombuilding up to a height at which it would intertcre with the free [lowof the water from the weir, a float G, rising and falling with the waterlevel in the outlet compartment of the weir chamber, is connected to andoperates a valve H located in the conduit 1 connecting the water supplypipe I to the heater inlet connection A The float G and operatingConnections bet veen the latter and the valve H are so adiusf'ed thatthe valve H will be closed when the water level on the outlet side ofthe weir rises to a predetermined maximum which should be below that atwhich the water on the outlet side of the weir would interfere with thefree flow of water over, the weir. \Vhen the water level on the outletside of the weir falls below said predetermined maximum the valve Hopens thus permitting water to How into the heater through theconduit 1. With this arrangement it will be apparent that so long aswater is being withdrawn from the weir chamber through the pipe D, nomatter how slow the rate of flow through the pipe D may be, the float Gwill keep the valve H open so that water will lie supplied by the pipe Iat a rate fast enough to maintain the water level on the supply side ofthe weir above the lowermost level of flow over the weir. When the flowthrough the pipe D entirely ceases, however, and the water level on thedischarge side of the weir rises to thepredetermined maximum the valve Hwill be entirely closed,

and will remain closeduntil the water level on the discharge side of theWeir is again lowered. I

To supply the demand for water withdrawn from the heater through theconnection A after the valve H is closed, I provide a second pipeconnection it between the main water supply pipe I and the water in letA of the heater. This pipe connection which forms a lay-pass about thevalve H, contains a valve K connected to and operated by a float Jresponsive to predetermined variations in the height of water level onthe supply side of the weir. The float J and theconnections between itand the valve K are adjusted to open and close the valve K as the waterlevel on the inlet side of the weir falls below and rises to apredetermined level which is below the lowermost level at which flowover the weir occurs. In the drawing the water level on the supply sideof the weir at which the valve K will commence to open is indicated bythe line M -l\I.

It will be apparent without further explanation that so long as water isbeing withdrawn from the weir chamber through the pipe D, the supply ofwater to the heater from the supply pipe I will be entirely eontrolledby the valve H and float G, and that when the outflow of water throughthe pipe D entirely ceases and the valve H is entirely shut cit thefloat J will open the toy-pass valve K to supply the demand for waterwithdrawn through the outlet passage A While in accordance with theprovisions of the statutes, I have illustrated and described the bestform of my invention now known to me, it will be apparent to thoseskilled in the art that changes may be made in the form of the apparatusdisclosed, without departing from the spirit of my invention, andthat-under some conditions certain'features of my invention may be used'without a 'correspondinguse of other featur'cs.

Having now described my invention,

what I claim as new and desire to secure by Letters Patent, is:

1. In a liquid measuring apparatus, the combination of a weir, a weirchamber divided into inlet and outlet compartments by the said weir,separate liquid discharge outlets from the two compartments, a liquidsupply connection to said inlet compartment, means responsive to theheight of liquid level in said outlet compartment for opening andclosing said connection as the liquid level in said outlet compartmentfalls below and rises to a predetermined height, a second liquid supplyconnection to said inlet compartment, and means responsive to the heightof liquid levelin said inlet compartment for opening and closing saidsecond connection as the liquid in said inlet compartment falls belowand rises to a predetermined level belowthe lowermost level of flow overthe weir.

2. In a liquid measuring apparatus the combination of a weir, a weirchamber divided into inlet and outlet compartments by said weir,separate liquid discharge outlets from the two compartments, a liquidsupply connection to said inlet compartment, a valve controlling .theflow throvgh said connection, means responsive to the height of liquidlevel in said outlet compart-

